I had CGROUP_MODE set to unified, and was getting the following cryptic error message whenever I tried to start a container:
Error: Failed to run: /usr/libexec/incus/incusd forkstart prototype-d /var/lib/incus/containers /run/incus/prototype-d/lxc.conf: exit status 1
Try `incus info --show-log prototype-d` for more info
The way to solve my problem was to simply disable the elogind service, which, as people who know Void say, should not have ever been enabled in the first case.